On Sunday I drove down to Northampton and the  annual Orchid Show put on by the Amherst Orchid Society. I do not grow orchids because I always think they require a greenhouse. However, anyone who has ever received a phaleanopsis orchid as a gift knows that it will live happily on a bright, but not sunny, windowsill.  I walked through the orchid show with Bill Benner, a member of the Amherst Orchid Society, who has about 100 orchid…